STTM IIR 14-003 Addition of Hexham CTP and MOS Validation

AEMO gives notice of consultation on proposed changes to the STTM Procedures for the Short Term Trading Market (STTM) under Rule 135EE of the National Gas Rules.

This notice of consultation is dated 28 July 2014.

Proposed procedure changes The proposed changes to the STTM Procedures (sections 2.2 and 5.4) are to:

Add a new Custody Transfer Point (CTP) at Hexham for the Sydney hub. AEMO proposes adding the CTP to reflect AGL’s upstream gas infrastructure developments that will connect to the Sydney network at the Hexham receipt point.

Allow a MOS offer quantity to be greater than or equal to zero. This corrects a misalignment between the minimum allowable MOS offer quantity in the STTM Procedures and the STTM Web-exchanger (SWEX) / SWEX Interface Engine (SWEXIE) applications. Currently the procedures only allow a MOS quantity offer to be greater than zero gigajoules (GJ), whereas the SWEX/SWEXIE applications also allow a MOS offer to be equal to zero.

Impact and Implementation Report

AEMO has published an Impact and Implementation Report (IIR) below, which details the proposed changes to the STTM Procedures.